package com.usian.article.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.usian.article.mapper.AuthorMapper;
import com.usian.article.service.AuthorService;
import com.usian.model.article.pojos.ApAuthor;

import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class AuthorServiceImpl extends ServiceImpl<AuthorMapper, ApAuthor> implements AuthorService {
    @Override
    public ApAuthor findByUserId(Integer userId) {
        LambdaQueryWrapper<ApAuthor> lambdaQueryWrapper =new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(ApAuthor::getUserId,userId);

        List<ApAuthor> list = list(lambdaQueryWrapper);
        if(list.size()>0){
            return list.get(0);
        }
        return null;
    }
}
